CP::KinematicHistAlg::HistSubgroup Node1 CP::KinematicHistAlg ::HistSubgroup Node2 TH1 + Fill() + Fill() + Fill() + GetBinContent() + GetBinContent() + GetBinContent() + SetBinContent() + SetBinContent() + SetBinContent() + SetBinError() + SetBinError() + SetBinError() + Sumw2() Node2->Node1 +phi +eta +pt